/Engine/Plugins/Runtime/RigVM/Source/RigVM/Public/RigVMCore/RigVMMemoryCommon.h
The ERigVMMemoryType maps to memory container index in RigVM throughFRigVMOperand::GetContainerIndex()or URigVM::GetContainerIndex(...) The type of memory used. Typically we differentiate between Work (Mutable) and Literal (Constant) memory.
enum ERigVMMemoryType { Work = 0, Literal = 1, External = 2, Debug = 3, Invalid, }